Heat-regulator for incubators



(No Model.)

L. H. CUTTING.

HEAT REGULATOR FOR INCUBATORS. No. 345,280. Partefitpd July 13,, 1886.

STATES rvrrua HEAT-REGULATOR FOR INCUBATORS.

SPECIFICATION forming part of Letters Patent NO. 345280, dated July 13,1886,

A pphcation tiledNovembcr30,1885. Serial No. 184,368. (No model.)

To all whom it may concern.-

Be it known that I, LEWIS H. CUTTING, a citizen of the United States,residing at Stockton, in the county of San Joaquin and State ofCalifornia, have invented a new and useful Means for Regulating the Heatof Incubators, of which the following is a specification.

The object of my invention is to provide a means whereby the heat in thehatchingchamber of incubators is rcgulatedin an automatic I accomplishthis object by means of the device illustrated in the accompanyingdrawings, in which-- Figure 1 is a side elevation of an incubator withmy invention applied thereto. Fig. 2 is a side view of the expansiontube and rod conneeting with a balance lever or beam. Fig. 3 is a viewin elevation of the adjusting device for the balance lever or beam. Fig.4 is a cross-section of an expansible tube or tubes employed. Figs. 5and 6 are views in detail of the burner, showing the slide and itsconnection for regulating the heat from the lamp.

To the upper end of the post A, within the incubator orhatching-chamber, I connect a flattened or other shaped tube, B, whichis filled with ammonia, alcohol, ether, or other liquid capable ofexpansion when in the presence of heat. The tube is coiled once or twiceupon itself, as shown, and from the free end a link-connection, C, ismade with a balance beam or lever, D,.which link passes through thebottom of the incubator and connects with the extreme inner end of thebalance beam or lever. The outer end of this balance-beam is providedwith a slide, 1), which shuts down over the end of alamp-wick tube,sothat when the coil or flattened tube expands it will raise up the end ofthe lever and shut oft the heat from the lamp or deaden the flame, theslide or tube moving up or down on the wick-holder. A threaded fulcrum,D, is connected to the bottom of the incubator, and passes downwardthrough the balance-beam, in which position it is held by the set-screwsE,,aud by turning these set-screws the balance-beam is raised orlowered, and the space through which the outer end passes when actuatedby the expansion or movement of the flattened tube is regulated, and alonger or shorter time is required to raise or lower the tube around thewick-tube or extinguisher of the lamp. At the end of the incubator isplaced the lamp F, leading into the vertical drum G, from which extendsa pipe, H, that enters the upper portion of the incubator.

In operation, the heat from the lamppasses up the vertical drum into theincubator, and when the temperature israiscd to a certain degrcc thefluid or liquid in the coiled tube will expand and gradually move upwardor uneoil it, and thereby depress the outer end of the balance beam orlever, and raise up the tube which surrounds the lampwick tube, so thatit will gradually shut off the heat from the lamp automatically andregulate the tempera ture in the incubator to the desired degree. Vhen aproper adjustment oft-he parts is had by means of the balance-beam andset-screws the parts are so nicely adj usted thata uniform degree ofheat will always be had in the in cubating-chamber.

The tube containing the liquid or fluid may be of a soft metal easilyaffected by heat, and may be flattened, diamond, or other shape inoutline or cross-section.

Having thus described my invention, what I claim, and desire to secureby Letters Patent,

The combination, with a heat-regulator forincubators having a fixedcoiled flattened or other shaped tube or pipe containing aliquid orfluid capable of being expanded by heat, of the link C,balance-beam D,alampextinguishor attached to the outer end of the balancebeam, threadedfulcrum D, for adjusting the balance-beam, and set-screws E,substantially as shown and described.

In testimony that I claim the foregoing I have hereunto set my hand andseal.

LEWIS H. CUTTING. [L. s]

Witnesses:

G. W. M. SMITH, Orms. E. KELLY.

